KASELYOVÁ, Paulína. Analysis of the State of Marketing Environment. In Trends in Application of Statistical Methods for Quality Iprovement IX. (2019) : Reviewed Proceedings of Posts from an IX. International Scientific Conference. - Košice : Katedra kvantitatívnych metód PHF EU : Katedra informačnej a jazykovej komunikácie PHF EU, 2019. ISBN 978-80-225-4676-8, p. 87 CD-ROM.